Motor-fan



C. H. J. D!LG.

MOTOR FAN.

AFPLICAHON FILED OCR", 101/ Patented Apr. 20, 1920.

2 SHEETSSHEET 1.

l/VIE/VTOR.

ATTORNEYS C. H. J. DiLG.

MOTOR FAN.

APPLICATION FILED OCT. 9, 19;].

1 3373 44 Patented Apr. 20, 1920 2 SHEETSSHEET 2.

a //II III I III a ll 1H 7 3%? WWW/W A TTOR/VEYS CHARLES H. J'. DILG, OFNEW YORK, N. Y.

MOTOR-FAN.

Specification of Letters Patent.

Patented Apr. 20,1920.

Qriginal application filed January 7, 1913, Serial No. 740,641. Dividedand this application filed October 9, 1917. Serial No. 195.497.

To all whom it may concern:

Be it known that 1, CHARLES H. J. DILG, a citizen of the United States,residing at the city of New York, in the borough of Manhattan and Stateof New York, have invented certain new and useful Improvements inMotor-Fans, of which the following is.

a full, clear, and exact description. I My invention relates to motorfans and particularly to motor fans of the oscillating type, thisapplication being divisional of my a plication Serial Number 740,641,filed Jiinuary 7, 19-13.

Une object of my invention is to provide a motor fan which may be easilyconverted from an oscillating to a non-oscillating fan, and vice versa.Another object is to prevent injuring the motor when any unusualopposition is ofiered to the oscillation. Other general objects aresimplicity and durability of construction, convenience in manipulation,and reliability in operation. Still other objects and advantages of myinvention will appear from the following description.

In accordance with my invention, 1 provide in the oscillating trainwhich operatively connects the motor shaft with a stationary abutment onthe base, a clutch designed to automatically disengage under excessiveback pressure on the oscillating train, as when an obstructionisencountered by the fan guard, and render the oscillating traininoperative, thereby converting the fan quickly and automatically into anonoscillating fan. Specifically this is effected by a slidable shaftwhich carries one element of the clutch and is resiliently held in itsposition of clutch engagement, the clutch elements being designed toseparate when they are subjected to relative movement. My invention alsocomprehends manual means for effecting the same operation. My inventionalso comprehends various other features of construction and arrangementsand combinations of parts, as will hereinafter more fully appear. i

I shall now describe the illustrated embodiment of my invention andshall thereafter point out my invention in claims.

Figure 1 is a side elevation of a complete fan embodying my invention;

Fig. 2 is a longitudinal sectional elevation of the rear portion of thesame, on an gplarged scale;

Fig. 3 is atransverse sectional elevation on line 33 of Figs. 1 and 2;

Fig. 4 is a detail face elevation of the striated clutch wheel;

Fig. 5 is a similar view of the coiiperating crank disk; and,

Fig. 6 isa detail, partially in rear elevation andpartially in section,of the cranklocking disk and cooperating parts.

In the illustrated embodiment of my invention an electric motor isemployed which is mounted upon a base 1 and carries a fan 2 of suitableconstruction upon the front end of the armature shaft 3 in the usualmanner. The base 1 is provided with an upwardly extending motor-bearingstem or arbor 4, and the motor casing 5 is provided on, its under sidewith an integral cylindrical bearing head 6 which has a cylindricalsocket fitting upon the upper end of .the stem 4 for rotative movementthereon, and which bears at its lower end upon an adjustable collar 7supported upon a shoulder on the stem 4. A locking screw 8 in thebearing head 6 engages in a circumferential groove in the stem 4 andlocks the motor against movement longitudinally of the steml Ananti-friction bearing is interposed at the upper end of the stem 4. Tooscillate the motor upon this bearing means are provided actuated fromthe armature shaft 3, as will now be described.

A crank member comprising a crank disk 9 is fixed on the end of ahorizontal axially slidable shaft 10 mounted below the armature shaft 3in suitable bearings in a gear casing 11 on the rear of the motor, andon its inner face this crank disk 9 is provided with a plurality ofbeveled clutch teeth 12 adapted to engage in striations 13 on theadjacent face of a gear clutch wheel 14.- which is loosely mounted onthe axially slidable shaft 10. A coiled spring 15 is disposed betweenthe clutch wheel and crank disk and tends to separate them, but with theshaft in the position shown in Fig. 3,

the two clutch members are held together against the expansive pressureof the spring 15. The clutch Wheel 14 is actuated from the armatureshaft 3 through reduction gearing comprising a worm 16 on the rear endof the armature shaft, a worm wheel 17 on one end of the stub shaft 18,and a pinion 19 on the other end of the stub shaft 18 and meshing withthe clutch wheel 14. Through these transmitting means the clutch wheel14 is continuously rotated by the motor, and, when the crank disk 9 isin engagement with the clutch wheel 14, it is also rotated by the motor.

To axially slide the shaft 10 and move the crank disk 9 into and out ofengagement with the clutch wheel 14, manually operative means areprovided comprising a stud or shaft 20 disposed at right angles to theslidable shaft 10, and having a knurled knob 21 on its outer end, and acrank or eccentric pin 22 on a head on its inner end extending into acircumferential groove 23 in the slidable shaft 10. The shaft 20 bearsin a plug 24 and a coiled spring 25 is disposed between the plug 24 andthe head on the end of the shaft 20, and holds the pin 22 in the groove23, while permitting the shaft 20 to yield longitudinally. The engagingfaces between the knob 21 and the plug 24 are preferably striated tosecurely lock the knob in adjusted position. It is now apparent that theturning of the knob 21 serves to adjust the slidable shaft through theengagement of the crank pin 22 in the groove 23, and to thereby throwthe crank disk 9 into and out of engagement with the clutch wheel 14..

To lockthe crank disk 9 against rotation when out of engagement with theclutch wheel, a lock disk 26 is provided on the op posite end of theshaft 10, which is provided with a plurality of socket holes 27 near itsperiphery adapted to engage with a spring pressed pin 28 in the casing11, when the shaft 10 is moved to disengage the crank disk. The springpermits the pin 28 to yield until it drops into one of thesocket holes27 The crank pin 29 for the crank disk 9 is mounted on a crank memberconsisting of a disk 30 pivoted eccentrically upon the crank disk 9 andso arranged that the center of the crank disk 9 is in the path ofrotation of the crank pin 29. On the periphery of the eccentric disk 30,suitably spaced locking notches are provided into which a spring pressedlocking pawl 31 is arranged to engage. A knob 32 on the eccentric disk30 affords convenient means for manually rotating the eccentric disk tovary the eccentricity of the crank pin 29 and thereby vary the throw ofthe crank pin, the locking pawl 31 serving to lock the eccentric disk-inadjusted position. It is evident that if the eccentric disk is adjustedto bring the crank pin 29 concentric with the crank disk 9, the throwof,the crank pin will be zero.

To mechanically connect the crank pin with a fulcrum or stationaryabutment to impart oscillation to the motor as the crank. is. actuated,a'connecting rod 33 is employed, which at one end has a pivotal andswivel connection with the crank pin 29, and at the other end has asimilar connection with a lug 34 on the adjustable collar 7 Theadjustment of this collar adjusts the fan relative to the base, as isapparent, and per mits the breeze to be sent in any direction withoutaltering the position of the base 1 relative to its support. A set screw35 locks the adjustable collar 7 to the motor-bearing stem 4 in adjustedposition.

The striated engaging faces between the crank disk 9 and the clutchwheel 14, being beveled or inclined, co-a'ct to spread the two membersapart if any excessive load is placed upon them, as occurs, for example,when any unusual opposition is offered to the oscillation, as when anobstruction is placed in the way of the fan guard. If the crank disk isheld against rotation, the rotative effort of the clutch wheel 14 causesthe striated clutch face to act as a cam on .the teeth 12 and force thecrank disk and slidable shaft 10 to the left, thereby rotating the-shaft20 and the knob 21, which is permitted by the striated engaging facesbetween the knob 21 and the'plug 24, the shaft 20 y eldinglongitudinally against the tension of the spring 25. In this way theoscillating mechanism is automatically disengaged and the motorprevented from becoming overloaded and possibly burned out whenoscillation is prohibited. When the obstruction has been removed, theknob' 21 may again be turned back and the oscillating mechanism throwninto operation.

It is obvious that various modifications may be made in the constructionshown in the drawings and above particularly described within theprinciple and scope of m invention. v v

I claim:

1. In a motor fan, the combination of a base, a motor and easingtherefor pivotally supported upon the base, and an oscillating trainoperatively. connecting the motor shaft to the base and including meansoperable by the motor to interrupt the train upon impedance of theoscillatory movement and thereby to automatically render the fannon-oscillatory.

2. In a motor fan,'the combination of a base, a motor and casingtherefor pivotally supported upon the base, and an oscillating trainoperatively connecting the motor shaft to the base and including ayieldable transmitting member arranged in one position to be positivelydriven and transmit actuation fromthe motor shaft and in anotherposition to be inoperative to transmitactuation and arranged to yieldunder excessive back pressure and move from the operative to theinoperative position.

3. Ina motor fan, the combination of a base, a motor and easing thereforpivotally supported upon the base, and an oscillating train operativelyconnecting the -m0tor shaft tothe base and including a shiftabletransmitting member arranged in one position to be posltively driven andtransmit actuation from the motor shaft and in another position to beinoperative to transmit actuation, means resiliently holding theshiftable member in both its operative and its inoperative positions,the said member being arranged to yield under excessive back pressureand be moved from the operative to the inoperative position, andmanually operative means for moving the said member into and out of theoperative position.

4. In a motor fan, the combination of a base, a motor and casingtherefor pivotally supported upon the base, and an oscillating tramoperatively connecting the motor shaft to the base and including ashiftable transmitting member arranged in one position to be positivelydriven and transmit actuation from the motor shaft and in anotherposition to be inoperative to transmit actuation, means resilientlyholding the shiftable member in both its operative and its inoperativepositions, and manually operative means for moving the said member intoand out of the operative position.

5. A motor fan comprising a base, a motor and casing therefor pivotallysupported upon the base, and an oscillating train operatively connectingthe motor shaft to the base, said train includin a clutch member oneelement of which is movable into and out of engagement with itscooperative element, and said train including means operated by themotor shaft to disconnect the said element from its cooperative elementwhen excessive resistance to the oscillation is encountered.

6. A motor fan comprising a base, a motor and casing therefor pivotallysupported upon the base, and an oscillating train operatively connectingthe motor shaft to the base, said train including a clutch member oneelement of which is movable into and out of operative engagement withits cooperative element and has means to disconnect it from itscooperative element when the two elements are relatively moved.

. 7. A motor fan comprising a base, a motor and casing thereforpivotally supported upon the base, and an oscillating train op erativelyconnecting the motor shaft to the base, said train including a clutchmember one element of which is movable into and out of operativeengagement with its cooperative element, and means resiliently holdingthe said elementin both of its said positions. I

8. A motor fan comprising a base, a motor and easing therefor pivotallysupported upon the base, and an oscillating tram operatively connectingthe motor s aft to the base, said train including a clutch member oneelement of .which is movable into and out of operative engagement withits cooperative element, means resiliently holding the said element inboth of its said positions, and manually operative means for shiftingthe said element.

9. A motor. fan comprising a base, an electric motorhavingpivotalengagement with the base, an axially slidable shaft carried bythe motor, a crank member, a connecting rod connecting the crank memberto the base and adapted to impart oscillation to the motor as the crankmember is operated, and speed-reducing means arranged to transmitactuation from the armature shaft to the crank member and including aclutch member engageable with the crank member, one of said membersbeing carried by the axlally slidable shaft and the two members havingcooperative clutch means to impart axial movement to the slidable shaftand separate the two members when the two members are relatively moved.

10. A motor fan comprising a base, an electric motor having pivotalengagement with the base, an axially slidable shaft carried by themotor, a crank member, a connecting rod connecting the crank member tothe base and adapted to impart oscillation to the motor as the crankmember is operated, speed-reducing means arranged. to transmit actuationfrom the armature shaft to the crank member and including a clutchmember engageable with the crank member, one of said members beingcarried by the axially slidable shaft, and means resiliently holding theslidable shaft in both engaging and non-engaging positions of the twomembers.

11. A motor fan comprising a base, an electric motor having pivotalengagement with the base, an axially slidable shaft carried by themotor, a crank member, a connecting rod connecting the crank member tothe base and adapted to impart oscillation to the motor as the crankmember is operated, speed reducing means arranged to transmit actuationfrom the armature shaft to the crank member and including a clutchmember engageable with the crank member, one of said members beingcarried by the axially slidable shaft, means resiliently holding theslidable shaft in both engaging and non-engaging positions of the twomembers, and manually operative means for sliding the shaft.

12. A motor fan comprising a base, an electric. motor having pivotalengagement with the base, an axially slidable shaft carried by themotor, a crank member on the shaft, a connecting rod connecting thecrank member to the base and adapted to impart oscillation to the motoras the crank member is operated, and speed-reducing means arranged totransmit actuation from the armature shaft to the crank member andincluding a clutch member enga cable with the crank member, the two memers having cooperative clutch means to impart axial movement to theslidable shaft and separate the two members and disconnect the crankmember when the two members are relatively moved.

13. A motor fan comprising a base, an electric motor having pivotal enagement with the base, an axially slidable s aft carried by the motor, acrank member on the shaft, a connecting rod connecting the crank memberto the base and adapted to impart oscillation to the motor as the crankmember is operated, speed-reduci means arranged to transmit actuation 1rom the armature shaft to the crank member and including a clutch memberengageable with the crank member, and manually operative means toaxially adjust the slidable shaft and move the crank member into and outof engagement with the clutch member.

14;. A motor fan comprising a base, an electric motor having pivotalengagement with the base, an axially slidable shaft carried by themotor, a crank member on the shaft, a connecting rod connecting thecrank member to the base and adapted to impart oscillation to the motoras the'crank member is operated, speed-reducing means arranged totransmit actuation from the armature shaft to the crank member and,including a clutch member engageable with the crank member, manuallyoperative means to axially adjust the slidable shaft and move the crankmember into and out of engagement with the clutch member, and

means for locking the crank member against,

connecting the crank member to the ful crum member and adapted to impartoscillation to the motor as the crank member is rotated, and manuallyoperative means for interrupting the connection between the motor andthe crank member.

16. A motor fan comprising a base having a fulcrum member'thereon, amotor and casing therefor, havingpivotal engagement with the base, arotative crank member carried by the motor casing, a connecting rodconnecting the crank member to the fulcrum member and adapted to impartoscillation to the motor as the crank member is rotated, and speedreducing means including disengageable clutch elements arranged totransmit rotation from the armature shaft to the crank member.

17. In a revoluble motor-driven fan, the combination with an armatureshaft and operating means normally coupled thereto for effecting anoscillatory movement of said fan, of means for uncoupling said operatingmeans 'from said shaft and locking said fan in position. v

18. In a revoluble motor-driven fan, the combination with an armatureshaft and mechanical means normally coupled thereto for effecting an.oscillatory movement of said fan, of means for uncoupling saidmechanical means from said shaft and means, including a part of.theaforesaid means, for retaining the said fan in position when thesaid parts are uncoupled.

19. In a revoluble motor-driven fan, the I combination with an armatureshaft and mechanical means normally coupled thereto for effecting anoscillatory movement of said fan, of means for uncoupling saidmechanical means from said shaft and means,

including a part of the aforesaid means, for y restraining furtheroscillatory-movement of said fan when the said parts are uncoupled.

20. In a revoluble motor-driven fan, the

combination with an armature shaft and mechanical means cooperatingtherewith for efiectin an oscillatory movement of said fan, 0 means forrendering said mechanical means inoperative and locking said fan inosition.

21. n a revoluble motor-driven fan, the combination with an armatureshaft and mechanical means normally in engagement therewith foreffecting an oscillatory movement of said fan, of means for disengagingsaid mechanical means from said shaft and for restrainin furtheroscillatory movement of said an when said parts are disen aged.

11 witness whereof I subscribe my signature.

CHARLES J. DILG.

